Plan fillers intentionally
Cabinet manufacturers often recommend fillers near walls so doors, drawers and hardware clear casing and imperfect corners.
Free contractor tool
Cabinet Layout & Filler Calculator
Check whether a cabinet run fits before installation day and turn the leftover inches into intentional filler space.
Ordered runEnd fillersPosition marks
Cabinet run layout
Build the run in order, then see the leftover filler space and each item's position from the left wall.
Run items
Cabinets, appliances or intentional openings. Keep them in installation order.
Fillers are best planned at run ends or where the cabinet manufacturer requires clearance. Full-overlay doors, casing, out-of-square walls and hardware can require more than the minimum you enter.
Position from left wall
A quick field reference for the planned run.
Measure front-frame width
Use the actual installed face/frame width for each cabinet, not just an internal box dimension.
Field conditions win
Out-of-square walls, scribes, panels and appliance clearances can change the final filler sizes. Verify the physical space before cutting.